Finding the Fourth Proportional to 3,413.46, 5,120.91 and 1,106.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,413.46 : 5,120.91 = 1,106.58 : x
2. Step 2: Convert to fraction form
   3,413.46/5,120.91 = 1,106.58/x
3. Step 3: Cross multiply
   3,413.46x = 5,120.91 × 1,106.58
4. Step 4: Simplify right side
   3,413.46x = 5,666,696.59
5. Step 5: Solve for x
   x = 5,666,696.59/3,413.46
6. Step 6: Final answer
   x = 1,660.10